Improvement in sewer-pipe stench-traps



L. HLGOLBORNE. Sewer-Pipe stench-Trap.

No. 203,590. Patented May 14. 1s7s-.-

LEVI ooLBonnE, or new YORK,

iri vl, hssrenoaorfonnlnhnr Hrs RIGHT TO GEORGE HIEEAOH, 'OF' 'SAME PLACE. 1

IMPROVEVMVENT m SEWER-PIPE sTENoH-TRAPS Specification forming part of Letters Patent No. 203,590, dated May 14,1878; application filed April 13, 1878.

,water out of the house water-traps in consequence of the partial vacuum created in the sewer-pipe by the strong currents of air in the street-sewer passing the mouth of the sewerpipe leading from the house and connected therewith; and the nature of my invention consists in combining, with a sectional tubular chamber or barrel having a spherically-formed seat in one end, an induction and eduction pipe inserted into the spherical end of the barrel, with their edges conforming in shape, so as to be perfectly closed by a spherical valve 5 also, in combining with the barrel and eduction-pipe a vent-pipe, whereby the air may act to keep the spherical valve closed upon the mouths of the induction and eduction pipes, and may escape from the back of the valve, to let it fall or roll away from the mouths of the pipes when waste soil and water are discharging through the trap.

But to describe my invention more particularly, I will refer to the accompanying drawings, forming a part of this specification, the same letters of reference, Wherever they occur, referring to like parts.

Figure 1 is a perspective view of the trap. Fig. 2 is a cut-sectional view of the same.

Letter A represents the barrel, having a boxcap, B, screwed on its front end, and all made of i any suitable metal for such employment or use. The depth of the barrel and its diameter will be governed by the place where used and the diameter of the spherical valve 0 used. As a general rule, the depth is not designed to exceed the double diameter of the valve, and is abundantly practical in operation where the valve has room to take the position shown by the dotted line D. In this position it allows the valve to open the mouths of the induction and eduction pipes E and F, entering the rear end of the barrel. The curvature of the ends of these pipes and the interior curvature of the rear end of the barrel is a concave hemisphere. The object of this is to form a valve-seat for the mouth of each pipe that will be simultaneously closed by the sin gle operation of the spherical valve rollingv into its seat. To enable it to roll into its seat by gravity, the front end of the barrel has a slight upward inclination, which permits the valve to roll back into its seat instantly that the pressure of the descending column of waste-water ceases.

To permit the valve to roll outwardly promptly under the pressure of a descending column of water through the trap, a vent-pipe, G, is inserted into the barrel, just back of the valve, with its lower end discharging into the side of the eduction-pipe. If the barrel were not thus vented, the valve would be resisted in its backward movements by a body of air, which, being compressed, would have a great tendency to impede the rapid and free discharge of the waste-water through the trap. Another advantage of the vent is that a full atmospheric pressure is exerted at all times to keep the valve in its seat, and thus not only cuts off the ascent of any gases through the eductionpipe, but also through the vent-pipe.

The point of attachment of the apparatus is intended to be upon the soil-pipe leading from the basement of the house to the streetsewer. As a rule, this would require the adjustment of the apparatus in the position represented in Fig. 2, thus giving a backward and downward inclination of the barrel, to cause the valve automatically to gravitate into its seat.

' As the intention is to have the valve act automatically, it will be obvious that any posi' tion of adjustment of the apparatus that permits this result is included within the practical operations of it, and is purposed being so applied and used, to adapt it to the varying situations of sewer, sink, and soil pipe connections in houses.

Having now described my invention, I will 2. The combination of the barrel A, arranged at an obtuse angle to the eductionpipe F, with the spherical valve 0 and induction and eduotion pipes, all constructed substantially as described, and for the purposes set forth.

LEVI H. COLBORNE,

Witnesses:

CHARLES L. BARRITT, THOMAS OMEARA. 

